AutoCodes – Buick – P1516 Buick

P1516 Buick Code - Throttle Actuator Control Module Throttle Actuator Position Performance

Quick Answer

The Engine Control Module (ECM) determines the driver's intent based on input from the accelerator pedal position sensors, then calculates the appropriate throttle response based on the throttle position sensors. Common causes include Binding or bent Throttle Plate, Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1516 Buick indicates Throttle Actuator Control Module Throttle Actuator Position Performance.
Common causes
Common causes include Binding or bent Throttle Plate, Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 22,182
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 13, 2022
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Code P1516 Buick Description

The Engine Control Module (ECM) determines the driver's intent based on input from the accelerator pedal position sensors, then calculates the appropriate throttle response based on the throttle position sensors. The ECM controls the throttle valve by applying a varying voltage to the control circuits of the Throttle Actuator Control (TAC) motor. The ECM monitors the duty cycle that is required to actuate the throttle valve. The ECM monitors the TP sensor signal/serial data circuit to determine the actual throttle valve position. The TP sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an unstable throttle position for greater than 1 s.
OBDII Code P1516 Buick - Throttle Actuator Control Module Throttle Actuator Position Performance - AutoCodes.com
P1516 Buick Code - Throttle Actuator Control Module Throttle Actuator Position Performance

What are the Possible Causes of the DTC P1516 Buick?

  • Binding or bent Throttle Plate
  • Faulty Throttle Body Assembly
  • Throttle Body Assembly harness is open or shorted
  • Throttle Body Assembly circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P1516 Buick?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1516 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1516 Buick code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1516 Buick Code

1. What are the common symptoms of OBDII code P1516 in a Buick related to the Throttle Actuator Control Module Throttle Actuator Position Performance?

The common symptoms include poor engine performance, rough idling, stalling, reduced power, and illuminated check engine light.

2. What are the possible causes of OBDII code P1516 in a Buick?

The code P1516 is typically triggered by a faulty throttle actuator control module, a defective throttle actuator, wiring issues, or a malfunction in the electronic throttle control system.

3. How can I diagnose the OBDII code P1516 in my Buick?

Diagnosing the code involves using a diagnostic scanner to retrieve the specific fault code, checking the throttle actuator control module and related components for any visible damage, and conducting thorough electrical tests.

4. Can I drive my Buick with the OBDII code P1516 present?

It is not recommended to drive your Buick with the P1516 code as it can lead to further damage to the engine and affect the vehicle's performance and safety.

5. How can I repair the OBDII code P1516 in my Buick?

Repairing the P1516 code may involve replacing the throttle actuator control module, repairing or replacing the throttle actuator, checking and repairing any damaged wiring, and clearing the error code with a diagnostic scanner.

6. Are there any preventive measures to avoid OBDII code P1516 in my Buick?

Regular maintenance, such as keeping the throttle system clean and ensuring timely inspections, can help prevent issues that may trigger the P1516 code.

7. Can a DIY enthusiast fix the OBDII code P1516 in a Buick?

While some individuals may have the skills to diagnose and repair the P1516 code, it is recommended to seek professional help to ensure the issue is properly resolved and prevent further complications.

8. How much does it cost to repair the OBDII code P1516 in a Buick?

The cost of repairing the P1516 code can vary depending on the extent of the issue, the parts needed for replacement, and the labor charges. It is advisable to get a quote from a trusted mechanic or dealership.

9. Is the OBDII code P1516 a common issue in Buick vehicles?

The P1516 code related to the Throttle Actuator Control Module Throttle Actuator Position Performance is a known issue in Buick vehicles, especially in models with electronic throttle control systems.

10. How urgent is it to address the OBDII code P1516 in a Buick?

It is important to address the P1516 code promptly to prevent further damage to the engine and ensure the vehicle operates safely and efficiently.

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